Controlling talking-machine turntables



F. L.. DYER March 31, 1931.

Jan. 23. 1929 I will be stopped,

' eluding I Patented Mar. 31,1931

STAT

; 'con'rmrmrm Tums-manner: runu'rnnnn's Application m him; as,

M invention relates to means for controlling the records of talkingmachines, gned'particularly for use in connection ioture films andoperated 1n erewith, as disclosed for-example, in my application forpatent, file January 2, 1929, Serial No. 329,800.

My objectis toprovide mechanism by which a talking machine record may bey and will pick-up to 10 started very quickl normal synchronous speedalmost instantly, which when also to provide 'mechanism by one record-isstarted, its companion record and further toprovide 15 mechanism bywhich both records may be held from rotation, if des1red. In order thatmy invention may be better understood, attention isdirected to theaccompanying drawing forming part hereof,

- and in which-- e' 1 is a plan view. of two records illustrating theimproved mechanism for controlling them and showing both records Figur Iheld from rotation.

Figure 2, a similar view, illustrating one record stopped and the otherrotating, the records being shown fragmentarily. Figure 3, a viewsimilar to Flgure in a reversal in the starting and stopping. i 4, aside elevation of one turntable and controlling mechanism; and.

Figure 5, a fragmentary section on an en.- larged scale, showingaiportion ofone turn- 1 table with the elements carried thereon, in-

the soundrecord.

In all of the above views corresponding parts are identified by the samenumerals.

There are two turntables for carrying the two sound records 1 and 2,adapted to be played successively, one being started the moment thesound from the other stops.

Each turntable 3 is of usual construction,

being formed of sheet metal with a down turned flange, and being carriedby a vertical shaft 4 driven continuously and in syn chronism withthemotion picture projector, as disclosed in my application above re,-

' ferred to.. The ordinary centering pin 5 no'projects upwards from eachturntable for d. the met 1 of 2, show- PATENT ot-Pica FRANK 1.. pm, ornew Yonx,

1929. Serial 110,884,488-

centering the several elements carried there-.

on, including the record 1 or 2. Mounted uPQn each turntable is afriction.

disk 6, made of a material havin al' relatively high coeflicient offriction wit respect to 5' the turntable, enerally sheet iron or steel.1 I prefer to use or the purpose, materials of the nature of automobilebrake' linings, employing im regnated asbestos fibre. Each disk 6 mayspective'turntable, or may rotate therewith by reason of frictionbetween the surfaces.

Placed upon each frictiondisk is a metal control disk'7 as shown,preferably carrying a facing 8 of felt or othersoft material, such 6 asthat now used on the upper face of.an ordinary talking machineturntable.

Resting on the felt or pad' 8 is the record 1' or 2, which thereforeWlll. be rotated by the v respective turntables through ate plates orcontrol disks 6 and 7. v a

Each of the control disks 7 is formed with 1 a projection or tooth 9adapted to be intercepted by the improved controlling mechanism ifrotating, at rest, as I will now explain, v

A- lever 10. having a handle 11 is pivoted upon support 12 y means of a.pivot screw 13, said lever being located between the two turn tables asshown in is formed' with an angular nose or vend 14 adapted to be movedin. the path of projec-e tion 9 corresponding to record 2, so as toarrest rotationthereof as shown in Figures 1 and 3 or to be moved out ofengagement with 8 said pro'ection to permit said record to rotate' assown inFigure2.p I

voted tolevfer 10 .is an arm 15 having a' hooked'end 16 adapted tocooperate in the same way with the projection 9 corresponding torecord 1. p Provision is made whereby the relative separation betweenthe controlling elements 14 and 16 maybe such as will stop both controldisks 7 as in Figure 1, or'stop only one or the other control disk as inFigures 2 and 3. For this purpose, I show toggle links 17, 17 connecting the arm 15 with lever 10, the ivot 18 of said links extendinginto a slot 0 a slide I 19, the latter havmg a longitudinal slot 20,

e. secured to its rethe intermediorto be released thereby, if 5Figure 1. The saidlever 'ded b a headed screw 21 and-by the pivot iiew13 before referred to. Y A spring 22 tends to move the slide 19 to theposition of Figure 1 thus s readin the 5 control elements 14 vand 16.H'he sli e is formed with a finger piece 23 by which it may be drawn tothe position of Figures 2nd 3,

bein locked against the tension of spring 22 by a atch 24.

m y suitable cushioning element may be employed to absorb the shock dueto the sudden stoppingof the disk 7 when it engages controlling element14 or 16.

In operation, both turntables will bedriven 15 continuouslyand insynchronism -with the projector. If either control disk 7 is re-.leased, the corresponding record will be driven by friction with the pad8 and through the friction disk,6 which may be either free to move withrespect to both the disk 7 and turntables or be secured to either so asto be movable with respect to the other.

If either control disk 7 is arrested, rotation of the record will stop,but the turntable-will continue to rotate against the friction offriction disk 6. a By causing the cont olling elements 14 and 16 tooccupy the positiim of Figures 2 and 3, the lever 10 as a who e may beswung pivotally to release one record and stop the other, while bytripping the latch 24 both records willlbe held from rotation as shownin Figure What I claim is: 1. In controllin mechanism for talkingmachines, the com ination with a pair of turntables and ,a sound recordfrictionally driven by each turntable, of a pivoted lever between saidturntables, a stop-on said lever 40 for controlling one recor an armpivoted, to said lever, a stop on said arm controlling the other recordand means for moving said arm independent y of said lever to arrestrotation of both records. v 2. In controlli mechanism for talkinmachines, the com ination with a turntable, a control disk carried bythe turntable, a friction disk between the control disk and turntablepermitting relative movement of said elements and drivin the controldisk frictionally, and a sound record carried by the control disk, ofmeans for permitting the starting and stopping said control disk.

, FRANK L. DY ER. so

